Live data from Hacker News

Ask HN: Any interesting books you have read lately?

news.ycombinator.com

351–360 of 532 posts

Re: Ask HN: Any interesting books you have read lately?

#351

Kind of off-path from my regular reading, but I recently got absorbed into the planted aquarium world. This book was such a great way to get acquainted with the ecology and methods required, though once you do it... It's extremely obvious that it works, and why it works: Ecology of the Planted Aquarium: A Practical Manual and Scientific Treatise https://www.amazon.ca/Ecology-Planted-Aquarium-Practical-Sci... Having a…

Any guides on what kind of equipment and set up is needed to get started? I've been having thoughts of having a "slice of nature" like you said. But I don't know what's the way to get as close to a self-sufficient and passive system as possible.

I think you can get pretty far by searching on YouTube for “walstad method tank” or “walstad planted aquarium”.

Some people start with a large jar, while others try something like a 5–10 gallon tank. You can go very small to start.

In a tank system, it’s helpful to include either a small filter or power head to maintain water movement. If you’re adding a lot of plants, a head is sufficient because the plants and animals will do a great job of filtration. I use snails (naturally occurring) and shrimp (purchased, but I’d like to find a native equivalent) to aid with cleanup, and the water is crystal clear after several months with no water changes, only top ups to account for evaporation.

If you want to include animals like fish, you really should ensure you do some research first and establish something with a lot of plant life. The fish won’t thrive without a suitable habitat and usually, most species require some water movement and excellent filtration.

As for self sufficiency, the systems will run on their own for extended periods quite well, but if you add more fish for example, you’ll generally need to add more food. Even so, this can be a very occasional event. With mine I will add material I find from my worm composter such as small white worms which colonized on their own. I’ve also experimented with raising daphnia in a jar with baker’s yeast as their food. I think I’ve only added external food once per month or so, and I’m not sure this was actually necessary. The system produces a huge amount of micro fauna and algae which the animals go crazy for. The animals are all tiny, too, so their feeding requirements would naturally be far less than your typical fish tank system.

The book is also a great guide, though it’s a little advanced. It assumes you know a bit about the hobby of aquaria, both planted and with fish.

In any case, I’d say it’s easier than you think. With the right understanding, it’s hard to fail. It’s incredibly complex, but establishing a good culture and allowing it to thrive will generally ensure it remains well balanced with very little intervention.

Re: Ask HN: Any interesting books you have read lately?

#352

Earlier quoted context omitted.

Wait, so how do you approach evaluating that for a server that manages a database?

Isn't most performance problems down to the CPU waiting for something? (network - disk - memory - cache)

Sometimes it's the CPU waiting.

Sometimes there is a connection open to the DB which acquired a lot of locks during a long-running transaction. The DB is processing this transaction on one DB connection, and many other DB connections are blocked because they can not access certain tables, pages, or rows. The other sessions are literally doing nothing and are waiting.

Potential ways to improve it:

- Reducing the scope of transactions - committing more often within the transaction - optimizing just the most impactful queries which contribute to the blocking session's runtime (not ones that don't block at all) - loosening the transaction isolation level

Re: Ask HN: Any interesting books you have read lately?

#353
List of books mentioned till now:

"The Man Who Folded Himself" by David Gerrold A fascinating exploration of time travel, despite its poor writing quality, according to the commenter.

"Dreaming: A Very Short Introduction" by J. Allan Hobson A hard science neurophysiological overview of dreaming.

"Material World" by Ed Conway A detailed look into basic minerals like sand, salt, oil, their supply chains, and the process of converting ores to materials.

"Blindsight" and "Echopraxia" by Peter Watts Sci-fi novels that deal with themes of consciousness and first contact with alien intelligence.

"The Sunken Land Begins to Rise Again" by M. John Harrison Noted for beautiful writing and vivid descriptions.

"The Thursday Murder Club" by Richard Osman A light and amusing mystery novel; the beginning of a series.

"The Roman Empire in Crisis" by Paul N. Pearson A detailed account of the Crisis of the Third Century in Rome, incorporating recent archaeological discoveries.

"The Good Virus" by Tom Ireland Introduces phages and their pivotal role in advancing human health through phage therapy.

"Nudge: Improving Decisions About Health, Wealth, and Happiness" by Richard H. Thaler A book about behavioral economics that suggests ways policies can be designed to "nudge" people into making better decisions.

"Blindsight" by Peter Watts A sci-fi novel that offers a less "anthropomorphic" first contact experience.

"Open Borders" by SMBC guy A book that presents an argument in favor of more open immigration policies.

"Snow Crash" and "Neuromancer" Classic cyberpunk novels, recommended for annual re-reading by the commenter.

"The God Engines" by John Scalzi A novella that is described as a sci-fi fantasy religious tale of space travel and manifested gods. Culture Series by Iain M. Banks A series of space opera novels set in a post-scarcity society.

"Art & Fear - Observations on the Perils (and Rewards) of Artmaking" by David Bayles & Ted Orland A book about human nature and creativity.

"The Case for God" by Karen Armstrong A book about the history of religion and how much is misunderstood in modern times.

"Years of Lyndon Johnson" by Robert Caro A detailed and well-researched biography of U.S. President Lyndon B. Johnson.

"The Captured Economy" by Lindsey and Teles "American Revolutions" by Alan Taylor "Everything Flows" by Vasili Grossman "Silk Roads" by Peter Frankopan A history of the world from a Central Asian perspective.

"Too Perfect: When Being in Control Gets Out of Control" by Allan Mallinger "The E-Myth Revisited" by Michael E. Gerber A book about why most small businesses don't work and what to do about it.

"Prisoners of Geography" by Tim Marshall An exploration of how borders and geography shape nations.

"Impro" by Keith Johnston A book with unique and radical views about how society functions.

"Peter Singer's books" Noted as being worldview-changing, but specific titles aren't listed.

"Two Years Before The Mast" by Richard Henry Dana An account of the cattle hide trade along the California coast in the 1830s.

"Empire of the Summer Moon" A book about the Comanche tribe and their conflict with settlers in the American West.

"Dune" by Frank Herbert A classic science fiction novel about politics, religion, and ecology on a desert planet.

"God, Human, Animal Machine" by Meghan O’Gieblyn Traces parallels between Christian theology and transhumanism.

"The Water Knife" A dystopian future novel set against a backdrop of water scarcity in the western United States.

Re: Ask HN: Any interesting books you have read lately?

#354
I’ve also been getting back into fantasy and sci-fi. I’m reading through the Wheel of Time series right now and it’s the best series I’ve ever read. I’m on book 7 and really glad there’s still 7 books left. If you liked Eragon, then you’ll probably love this series.

Contrast that to Dune, which I heard so much praise for and was very very disappointed by. The first Dune book was ok, but it just went downhill from there. The God Emperor of Dune was the most boring garbage I’ve ever read, and I’m convinced people think it’s great because they read it in high school or middle school and thought it was “deep” when it’s just a bunch of fluff with no substance. The plot is terrible too. Once again, the first Dune book was alright, but the rest are absolute trash in my honest opinion.

Re: Ask HN: Any interesting books you have read lately?

#355
“Doomguy: life in first person” which is the autobiography of John Romero. I definitely enjoyed “Masters of Doom” which is a great book in itself, and this added perspective from Romero was enjoyable.

But I grew up on their games, both playing and modding, so I do have a soft spot for their history.

Re: Ask HN: Any interesting books you have read lately?

#356

I've been slowly going through Divine Proportions: Rational Trigonometry to Universal Geometry , by Norman J. Wildberger. Wildberger is a mathematician, and a finitist. This means that he doesn't believe in infinity in the modern mathematical sense (I'm sure he won't dispute that the integers are unbound, for example). Which means he does not believe that Real numbers are properly defined either, or that limits are r…

I was thinking about this just the other day. If infinity isn't actually a thing in our universe, then maybe we're taking some risks by using math with all these infinite limits and integers. Maybe if we look at theorems without using infinity, we'd stumble upon new or different equations.

Re: Ask HN: Any interesting books you have read lately?

#357
post #287
post #217

The Code Book by Simon Singh[1]. The book is very old, first published in 1999, but I did not know about it till my colleague brought it to work recently. The following stories are very interesting and read as detective novel: 1) how Enigma worked and how it's code was cracked; 2) how Egyptian hieroglyphs were deciphered, which appeared to be very common to Coptic language[2]; 3) how Linear B writing decoded[3], whic…

Singh's Fermat's Last Theorem is a better book, IMO.

Oh, did know there's another one from him. Thanks!

Re: Ask HN: Any interesting books you have read lately?

#358
"Russia: Revolution and Civil War". Antony Beevor is an historian with a knack for good anecdotes. It can be a little hard to follow, but it's worth a read. His books about the battle of Stalingrad and Berlin are much better though.

I'm currently reading "Lamb: The Gospel According to Biff". If you need a book to unwind from a brick about the civil war, this is it. It's hilarious.

"Salt Fat Acid Heat" is recommended by everyone for a reason. Unfortunately, I read before bedtime and it makes me want to get out of bed and cook things.

"A very brief introduction to Marx" is exactly what's on the tin. These very brief introductions are a great way to read about something, although the writing quality varies from book to book.

Re: Ask HN: Any interesting books you have read lately?

#359
post #98

Adult Children of Emotionally Immature Parents I'm a person that struggles with boundary-setting and have spent numerous years in relationships that have left me as less-than I was before. Imagine people-pleasing to an absolute fault, and being more of a chameleon that adapts to avoid conflicts. This has led to problems of identity, and deriving my sense of worth through others which isn't healthy. Fortunately, I do…

Another book you may find useful is “when I say no I feel guilty”. It has helped me with similar issues.

Re: Ask HN: Any interesting books you have read lately?

#360
post #165

Earlier quoted context omitted.

Ya right. Like any one in their right mind wants to have 10 wives to deal with. Dont get confuse hooking up with marriage. I think Esther Perel has written the best stuff on modern relationships. Read her.

worse else, 10 mother-in-laws ...

Could you marry the mother in laws?
Post reply on HN